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GAR B'OLSTER. No. 549,788. Patented Nov. 12, 1895.

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ANDREW BJQRANAM4 PHOTU-UTMD WASHINmLUC.

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M.K.HENGH. GAB. BOLSTER.

Patented Nov. 12, 1895 y Waff/f7 /f @ne/1.

AN BREW ILGRAHAM FHUTO-UTNQWASNINGFDN. D.C.

UNITED STATES PATENT OFFICE..

MARTIN K. I-IENCII, OF CARLISLE, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO L. F. BOWER, OF SAME PLACE.

CAR-BOLSTER.

SPECIFICATION forming part of Letters Patent No. 549,788, dated November 12, 1895. Application filed October 16, 1894. Serial No. 526,092. (No model.)

To all whom #may concern:

Be it known that LMARTIN K.' HENCH, a citizen of the United States, residing at Carlisle, in the county of Cumberland and State of Pennsylvania,have invented certain new and useful Improvements in Car-Bolsters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In the construction of railway-cars it has been the practice to make the car-bolster of wood and metal, the parts of which are built up and united together by bolts. In this built-up style of wood and metal bolster it is cumbersome, heavy, and liable to split or break under the weight and strain of the car and be shaken apart by the jolting and jarring of the car when in service. Besides, the bolster cannot'be readily adapted to various styles of car work and trucks.

It is the object of this invention to provide an improved car-bolster which is composed of few parts and is simpler and lighter in construction than the common style of bolster, is stronger for a given Weight of metal, and is readily shaped and applicable to the sillwork and truck-bolster of railway-cars.

Another object of the invention is to provide a novel form of central bracing and bearing for the middle of the car-bolster, and a further object is to furnish novel side bearings between the central bearing and ends of the bolster, which side bearings serve as bearings to the car-body and as braces for the bolster.

Vith these ends in view my invention consists of a pressed-steel bolster, essentially of channel-bar form, provided at its ends with depressions to form seats which receive the side sills of the car substructure, and said bolster has longitudinal flanges at the side edges thereof, these side flanges being joined at the middle or central bottom part of the bolster by a transverse bridge, which is integral with the flanges, so that the middle of the bolster in cross-section presents a square or retangular hollow appearance. The middle hollow part of the -bolster at the place where the king bolt or pin from the truck passes through is reinforced to resist the shock of impact by vertical braces or plates that are inclosed within the walls forming the structure, and which brace-plates are flanged to enable them to be conveniently united to the bolster in a substantial rigid manner.

The invention consists in the combination of devices and in the novel construction and organization of parts which will be hereinafter fully described and claimed.

To enable others to readily understand my invention, I have illustrated the same in the accompanying drawings, forming a part of this specification, in which Figure 1 is an end view showing the truck and bolster in elevation, the improved carbolster in side elevation, and the sillwork of a car in cross-section, as contemplated by my invention. Fig. 2 is a vertical transverse central sectional view on the plane indicated by the dotted line a: of Fig. l. Fig. 3 is a vertical transverse sectional view on the line y y of Fig. l at one side of the truck. Fig. 4 is an enlarged plan view of my improved bolster detached from the car. Fig. 5 isa view, partly in side elevation and partly in longitudinal section, of the bolster shown in Fig. 4. Fig. 6 is an end view of the bolster. Figs.

j7, S, and 9 are transverse sectional views through the bolster on lines m m, 'n n, and o o, respectively, of Fig. L

Like letters of reference denote corresponding parts in all the figures of the drawings, referring to which- A designates my improved car bolster, which is made of pressed steel and in a single piece. This bolster is used in connection with a truck B, the bolster C forming a part of the truck,and the car-body D, having the side sills CZ d, the central sills d d', and the intermediate sills cl2 d2, all of which partsl are of the usual or any preferred construction approved by those skilled in the art to which this invention relates.

The bolster A consists of the top plate a., the longitudinal ribs or flanges a a', and the transverse web a2, which are all formed in a single piece of pressed steel. The iianges a' a depend from the sides of the top a, and each side flange gradually increases in depth from each end of the bolster to the central middle part of said bolster, and the web a2 unites the IOO side flanges a' a at the middle oi' the bolster, so as to impart to the bolster, at the middle thereof, the hollow, square, or rectangular form in cross-section shown by Figs. 8 and 9 of the drawings, whereby the strength of the bolster is increased at the place where the greatest strain and wear are brought upon it. To increase the strength and durability of the bolster at this central part, and to enable the bolster to resist the shock of impact in coupling cars, I reinforce it by the employment of the brace-plates F F', which are made in the form of channeled or iianged plates and'are wrought from cast, malleable, wrought, or pressed metal. These brace-plates F F are arranged within the hollow central part of the bolster, on opposite sides of the vertical Vcenter thereof, and the flanges 'or ribs f f at the ends of said brace-platesareV applied against the inner surfaces at the top a and bottomweb a2 of said bolster, the plates F F being rigidly united to the bolster by means of the bolts, rivets, or other fastenings f. (Shown more particularly in Figs. 4, 5, and 9 of the drawings.

To accommodate the side sills d d of the substructure of the car-body andto provide for a greater depth of the side sillsthan` is ordinarily used in the building of railway-cars, I

sides thereof, in order to provide the seatsto '3 receive and retain the side bolstersdd of the car-body, andsaid ends of the pressed-steel bolster are reinforced by the longitudinal tapering channels forming the ribs g g, which extend inward from the inside walls ofthe l seatstoward the center of the bolster, said tapering reinforcement ribs or iianges` g g gradually merging into the surface of the top plate or body a of the bolster, as clearly shown by Figs. 4, 5, and 6 of the drawings.

My improved bolster, made practically from a single continuous pieceof pressedsteel, af fords greater strength and durability with Aless weight of metal, as compared-with the common built-up style of composite 'wood and metalbolsters, and the bolster can bemore readily shaped and formed to'adapt and acA-` coinmodate it to the'sillwork of car-bodies of various constructions.

In connection with my improved'bolster I ferred embodiment ofthis centralbearing the lower plate h is shaped to form thev raised iiange vl, which produces the central soclietz", open at its upper end. The top plate h is pressed or formed to produce the central pendenthubj, which protrudes asuitable distance below the car-bolster, and which hub ,j is shaped and proportioned to fit snugly in the socket fi', formed by the raised flange t' on the lower plate. These beaming-plates are fitted snugly together to turn freely one upon the other, and through said plates passes the central king pin or bolt I, that is extended through the bolsters of the car and truck, as shown by Figs. l and 2. These socket-ed plates h 7L' of the central bearing are united to the car-bol ster and the truck-bolster in any suitable way, and said plates h h are made of cast, malleable, or wrought metal, or of pressed steel, as may be preferred. The side bearings are indicated at .I K in Figs. l and 3 of the drawings, and they are arranged on opposite sides of the central bearing, betweenthe latter and the ends of the bolster. Each side bearing consists of a fiat 4base-plate j,which is bolted to the top of the truclcbolster, and the channeled plate 7c, arranged"immediately above the baseplate j, out of contact with the same under normal conditions and united to the channeled carebolster A. These plates 7.; are made `of channeled'or flanged metal, and they are iittedbetween the pendent side flanges or ribs a a of the bolster, with the solid lower part facing the base-plate, said channeled plates 7.: being united to the top a or the flanges d of the bolster by rivets 7a', bolts, or other suitable i fastenings." l y The operation and advantagesof my inven- Ljtion will be readily understood from the forelgoing description, taken in connection with i the drawings, by those skilled in the art to iwhich this invention relates.

I ain-aware that changes in` the form and proportioncf parts, and in the details of con- 3 struction of the devices herein shown and describedasan embodiment of my invention,

`can be made'by a skilled mechanic without departing from thespirit or sacrificing the ad- Svan'tages thereof, andI therefore reserve the iright to make such'modificationsand'altcrations as fairly fallwithin the scope of the invention. y

Having thus 'fully described my invention, what I claim-as new, and desire to secure by Letters Patent, isMh l. 'As a new manufacture, a pressed steel car-bolster provided with pendent side iian ges which taper from the ends toward the middle of the bolster, andthe transverse web d2 which joins the side `flanges below the middle part of lthebolster, and braces united to thetop and `bottomof the bolster n earthe middle thereof, substantially as' and for the purposes described.

2: A pressed-steel carbo'lster provided with the integral iianges and the web a2 which I joins said iiangesat the middleof thebolster, combined with the upright' brace -plates united to the top `and web of the bolster, and ya central bearing having the upper member thereof united to the web a2 of the bolster,

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substantially as and for the purposes described.

3. Apressed-steel car-bolster having` the integral side iianges and the web co2 which joins the iianges below the top of the bolster, at the middle thereof, combined with intern al braces fastened to the top and web of the bolster, a central bearing having its upper member united to the web a2 of the bolster and interlocked with the lower member of said bearing which vis xed to the'truck bolster, and a king bolt which passes through the car and truck bolsters and the interlocking members of the central bearing, substantially as and for the purposes described.

4. Apressed-steel car-bolster provided,near its ends, with the depressions forming the sill seats, G, in the upper face of the bolster, and having its pendent side iianges joined by the central transverse web a2, and the internal braces fastened to the top and web a2 of said bolster, substantially as and for the purposes described.

In testimonj)T whereof I afl-lx my signature in presence of two witnesses.

MARTIN K. HENCH.

Witnesses:

WM. C. MILLER, JOHN R. MILLER. 

